Enterprise 3 series is designed for learners of English at secondary level.

Enterprise 1 and Enterprise 2 each consist of four modules and are designed for learners of English at early-secondary level. The course focuses on the gradual development of all four language skills - listening, reading, speaking and writing. The Student´s Book and the Workbook for each level are designed to be covered in approximately 80 to 90 hours of classroom work.